Skip to main content
  • Products
  • Evaluate our Software
  • Downloads
  • Free Utilities
  • Purchase
  • Silicon Vendors
  • Support
  • About Us
  • Blog
  • Forum
  • Search
  • Jobs
  • Newsletter
  • Blog
  • Contact
  • Shop
  • J-Link debug probes
  • 6-Pin Needle Adapter

    6-Pin Needle Adapter

    The 6-Pin Needle Adapter connects a J-Link or Flasher to a PCB which does not come with a mating connector or programming header.

    Buy now
    Compare J-Link adapters
    Documentation
    SEGGER Debug & Trace Probes
    1. 1.Pinout
    2. 2.Footprint
      1. 2.1.Layout Problems to Avoid
    3. 3.Schematics

    Overview

    The 6-Pin Needle Adapter has been designed to connect J-Link or Flasher to a PCB which does not come with a mating connector or programming header. The designed pattern with 3 locating pins ensures that the adapter can only be connected in one way. The 6-Pin Needle Adapter allows manufacturers to save costs and space on their PCBs since there is no need to provide the PCB with additional connectors. It adapts from the standard 20-pin 0.1'' connector to a 6-pin needle connector.

    Please note:
    If JTAG support is required, use the 10-Pin Needle Adapter instead since the 6-Pin Needle Adapter does not provide enough pins for JTAG.

    6-Pin Needle Adapter with cable
    6-Pin Needle Adapter with cable

    Key Features

    • No additional connector required on your PCB
    • Very small footprint - even smaller than the footprint of the 10-Pin Needle Adapter
    • High reliability spring pins for secure connections
    • Designed with 3 locating pins, so the adapter can not be connected the wrong way

    Pinout

    As you can see on the image below, the three locating pins ensure, that the adapter can not be connected to the PCB the wrong way. Moreover, the two "legs" on each side of the connector guarantee a stable and secure contact between pins and the PCB.

    6-Pin Needle Adapter plugged
    6-Pin Needle Adapter Pinout
    6-Pin Needle Adapter Pinout
    6-Pin Needle Adapter connector pins

    Three locating pins ensurethat the adapter cannot be connected the wrong way:

    6-Pin Needle Adapter removing legs

    In case of space problems, the two "legs" on each side can easily be cut off as shown in the image below:

    Footprint

    6-Pin Needle Adapter Footprint
    6-Pin Needle Adapter Footprint
    6-Pin Needle Adapter PCB
    6-Pin Needle Adapter PCB

    Layout Problems to Avoid

    Please be sure to avoid the situations illustrated below to ensure the J-Link 6-Pin Needle Adapter functions properly.

    The PDF version of the datasheet can be downloaded here. In addition to the footprint and hints to avoid layout problems, this PDF includes detailed information about the cable, plug and connector of the J-Link 6-Pin Needle Adapter.

    J-Link-6-Pin-Adapter-Avoid

    Schematics

    The following picture shows the connections from the 20pin standard JTAG connector to the 6-pin, 0.05 inch needle pattern:

    6-Pin Needle Adapter Schematics
    6-Pin Needle Adapter Schematics

    Suitable products

    • J-Link Pro PoE
    • J-Link Pro
    • J-Link ULTRA+
    • J-Link WiFi
    • J-Link PLUS Classic
    • J-Link PLUS Compact
    • J-Link BASE Classic
    • J-Link BASE Compact
    • Flasher PRO
    • Flasher PRO XL
    • Flasher Compact
    • Flasher ARM
    • Flasher Portable PLUS
    • Flasher Secure
    • List of downloads
    • Pricing
    • Buy now
    • Regulatory documents

    Headquarters

    SEGGER Microcontroller GmbH

    Ecolab-Allee 5
    40789 Monheim am Rhein, Germany
    info@segger.com
    Tel.: +49-2173-99312-0
    Fax: +49-2173-99312-28

    Locations

    USA: SEGGER Microcontroller Systems LLC

    Boston area
    101 Suffolk Lane
    Gardner, MA 01440, USA
    us-east@segger.com
    Tel.: +1-978-874-0299
    Fax: +1-978-874-0599

    Silicon Valley
    Milpitas, CA 95035, USA
    us-west@segger.com
    Tel.: +1-408-767-4068

    China: SEGGER Microcontroller China Co., Ltd.

    Room 218, Block A, Dahongqiaoguoji
    No. 133 Xiulian Road
    Minhang District, Shanghai 201199, China
    china@segger.com
    Tel.: +86-133-619-907-60

    ISO 9001 certified

    ISO 9001

    30+ years of experience

    First-class embedded software tools since 1992
    • Imprint
    • Disclaimer
    • Code of Conduct
    • Privacy Policy
    © 2025 SEGGER - All rights reserved.